Hazmat Operations, Top Exam Question and answers, VERIFIED.

Hazmat Operations, Top Exam Question and answers, VERIFIED. What is the most critical factor in ensuring your safety on a hazardous materials call? - -Recognizing that the incident involves hazardous materials What is the minimum level of hazardous materials training required to take defensive actions? - -Operations What is the detailed profile of a specific chemical's properties that is provided by the manufacturer and/or supplier of that chemical - -Material safety data sheet What is the NFPA standard governing the competence of responders to hazardous materials/weapons of mass destruction incidents - -473 Which subsection of 29 CAR 1910.120 covers emergency response - -Q In general, which factor has the most influence on the actions taken at a hazardous materials incident? - -The properties of the specific chemicals involved Defensive hazardous materials operations are those actions taken to - -Contain/confine the release from a safe distance A flammable vapor concentration that is too rich to ignite is - -Above the Upper explosive limit What flammable range value presents the greatest danger? - -The widest spread between the LEL and UEL If a substance with a vapor density of 2.3 is released into the environment, it will - -Collect in low spots What will a liquid with a specific gravity of 0.7 do in water - -Float on the surface What is a neutral pH? - -7 A situation in which a released chemical has contacted people and the environment is described as - -Exposure According to the NFPA, what is defined as a material capable of posing an unreasonable risk to health, safety, or the environment - -Hazard What is the temperature at which a flammable liquid will ignite without any external ignition source? - -Ignition temperature A flammable vapor concentration that is too lean to ignite is - -Below the lower explosive limit Which property tells you the weight of a gas compared to air? - -Vapor Density What is the vapor density of air? - -1 What is the specific gravity of water - -1 The DOT defines a ________ material as one that causes destruction or irreversible damage to living tissue at the site of contact - -Corrosive What is the minimum temperature at which a liquid fives off sufficient vapor to ignite briefly if provided with a source of ignition? - -Flash point What is the minimum temperature at which sustained combustion will occur if a material is exposed to an outside ignition source? - -Fire point What is the term for the fuel/air mixture necessary for combustion - -Flammable range Which device is used to assess the flammable range of a released vapor or gas? - -Combustible gas indicator What is the term for the pressure exerted by the vapor of a liquid until the vapor and the liquid are in equilibrium - -Vapor pressure A substance that is water soluble will ______ in water - -Dissolve What is the process in which unstable atoms of an element decay and emit excess energy in the form of particles or waves? - -Radioactivity Which is the most energetic type of radiation - -Gamma Which type of agent prevents the body from using oxygen - -Cyanide compound By which route of exposure are toxic substances brought into the body through the respiratory system? - -Inhalation What is the process by which hazardous materials travel through body tissues until they reach the blodstream - -Absorption What is the process by which chemicals enter the body through the gastrointestinal tract? - -Ingestion What is the term for the process in which chemicals are brought into the body through open cuts or abrasions? - -Injections What is the term for an adverse health effect that develops gradually over time? - -Chronic Which kind of health effect occurs after a single exposure to a toxic substance - -Acute Which container is used for cryogenic liquids? - -Dewar vessel What is the minimum capacity of a bulk liquid storage container? - -119 gallons Which of the following is an intermodal tank type - -IM-101 Which of the following is a distinguishing characteristic of a pressure tank railcar? - -An enclosed dome on the top of the tank Which of the following is an identifying characteristic of a pressurized horizontal tank? - -Rounded ends Which bulk storage vessel is a portable plastic tank surrounded by a stainless steel web? - -Tote Which of the following is an identifying characteristic of an intermodel tank? - -A box-like steel frame IMO type 5 containers are - -high pressure vessels What is the most common cargo of an MC-306? - -Flammable liquid Which cargo is carried by a highway tanker that has a smaller-diameter tank with several reinforcing rings around the circumference -